I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
socas socks soaks skas secs sags sacs sics sequoias sakes sokes skuas segos sagas scows sucks sagos souks cycas sakis sicks sacks sikas sooks squaws scouse sickos saigas sax sickees sickies soukous sox sukkahs segs skis suks suqs
cocas socas ocas soaks mocks oaks hocks macaws case cocks cocos locos nocks cays goas okas picas rocks cycas socks docks togas chocks showcase yogas koas caws knocks locks docs chicas mocs decays bocks micas locus hookas jocks cacaos yocks shocks focus cocoas casa hocus pacas pocks rocs sequoias cacas biogas yucas